(19)

(11)

EP 3 827 340 A1

(12)

(43) Date of publication: 02.06.2021 Bulletin 2021/22 (21) Application number: 19791024.3 (22) Date of filing: 01.10.2019

(51) International Patent Classification (IPC):  G06F 9/451(2018.01) (86) International application number: PCT/US2019/054159 (87) International publication number: WO 2021/066818 (08.04.2021 Gazette 2021/14)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (71) Applicant: Google LLC Mountain View, CA 94043 (US)	(72) Inventors: NARAYANAN, Ajit Mountain View CA 94043 (US) GOLDMAN, Ken Mountain View CA 94043 (US) (74) Representative: Colonna, Matthew Oliver  Venner Shipley LLP 200 Aldersgate London EC1A 4HD London EC1A 4HD (GB)